Laravel Interview Questions and Answers
Intermediate / 1 to 5 years experienced level questions & answers
Ques 1. Explain the MVC architecture in Laravel.
MVC stands for Model-View-Controller. In Laravel, it separates the application logic into three interconnected components for better organization.
Example:
Creating a controller with 'php artisan make:controller MyController'
Ques 2. What is Eloquent in Laravel?
Eloquent is Laravel's ORM (Object-Relational Mapping) system, providing an elegant and expressive way to interact with the database.
Example:
Retrieving data from a 'users' table using 'User::all()'
Ques 3. Explain middleware in Laravel.
Middleware acts as a bridge between a request and a response, allowing you to filter HTTP requests entering your application.
Example:
Creating a custom middleware with 'php artisan make:middleware MyMiddleware'
Ques 4. Explain the purpose of the Eloquent ORM 'hasMany' relationship.
'hasMany' is used to define a one-to-many relationship in Eloquent, indicating that a model can have multiple related models.
Example:
Defining a 'hasMany' relationship in an Eloquent model
Ques 5. Explain the use of Laravel Mix.
Laravel Mix is a wrapper for Webpack that simplifies the process of compiling and bundling assets such as JavaScript and CSS.
Example:
Compiling assets with 'npm run dev'
Ques 6. Explain the purpose of Laravel Eloquent 'belongsTo' relationship.
'belongsTo' is used to define a many-to-one relationship in Eloquent, indicating that a model belongs to another model.
Example:
Defining a 'belongsTo' relationship in an Eloquent model
Ques 7. What is Laravel's dependency injection and why is it used?
Dependency injection is a technique where the dependencies of a class are provided from the outside. Laravel's IoC container is used for dependency injection to achieve a more flexible and testable code.
Example:
Injecting a service into a controller constructor
Ques 8. Explain the purpose of Laravel Eloquent Accessors and Mutators.
Accessors are used to manipulate attribute values when accessing them, while mutators are used to manipulate attribute values before saving them to the database.
Example:
Creating an accessor and mutator in an Eloquent model
Ques 9. Explain Laravel's method injection.
Method injection is a way to inject dependencies into a method's signature, allowing the developer to resolve the dependencies through Laravel's service container.
Example:
Using method injection in a controller method
Ques 10. Explain the purpose of Laravel Mix.
Laravel Mix is a wrapper for Webpack that simplifies the process of compiling and bundling assets such as JavaScript and CSS.
Example:
Compiling assets with 'npm run dev'
Ques 11. Explain Laravel Middleware and provide an example of usage.
Middleware provides a convenient mechanism for filtering HTTP requests entering your application. It can be used for authentication, logging, CORS, and more.
Example:
Creating a middleware to check user authentication
Ques 12. Explain the purpose of Laravel Task Scheduling.
Task Scheduling in Laravel allows you to schedule tasks to run periodically. It is useful for automating recurring tasks in a Laravel application.
Example:
Scheduling a task to run every day at a specific time
Ques 13. What is Laravel Mix and how is it different from Laravel Elixir?
Laravel Mix is an API for defining Webpack build steps for your Laravel application, while Laravel Elixir was the predecessor providing similar functionality.
Example:
Compiling assets with Laravel Mix
Ques 14. Explain the purpose of Laravel's Eloquent 'hasOne' relationship.
'hasOne' is used to define a one-to-one relationship in Eloquent, indicating that a model can have at most one related model.
Example:
Defining a 'hasOne' relationship in an Eloquent model
Ques 15. Explain the role of Laravel's RouteServiceProvider.
The RouteServiceProvider in Laravel is responsible for mapping routes to controllers and loading the RouteServiceProvider in Laravel is responsible for mapping routes to controllers and loading the routes file.
Example:
Defining routes in the RouteServiceProvider
Ques 16. Explain the use of Laravel's 'return $this' in Eloquent models.
In Laravel Eloquent models, 'return $this' is used to enable method chaining, allowing you to perform multiple operations on a model instance in a single line.
Example:
Using 'return $this' for method chaining in an Eloquent model
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